These things melt more slowly than a snow pack, making them useful for preserving water over a full growing season. I suspect there are ways to enhance the eff

These things melt more slowly than a snow pack, making them useful for preserving water over a full growing season. I suspect there are ways to enhance the effect of letting water freeze in a column in layers. Do people make artificial snow up there? If so they can probably leverage similar techniques to make these things.